Popular Amino Acid!
Provides Support For Production of Nitric Oxide*
8.6  out of 10  (68 Reviews)
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Product Overview

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  • Popular Amino Acid
  • Stimulates the production of nitric oxide which supports vasodilation*
  • Contain no preservatives, diluents, or artificial additives

Supports Muscle Protein Synthesis*

Supports Healthy Blood Flow*

Available in Softgels

L-Arginine is a popular amino acid for its amazing nitrogen retention ability.* Nitrogen as you are all aware is one of the key elements in muscle protein synthesis. Some plants can absorb nitrogen, but we mammals have to make do with the stuff we make ourselves. Arginine is mostly present in protanines and histones, two proteins commonly associated with nucleic acids (like DNA and RNA).

Ratings & Reviews

Overall Rating
68 Ratings
Verified Buyer Rating
42 Ratings
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Sep 13, 2019
Verified Buyer

I use this product to increase blood flow and pump seems to work for me on a mega dose of 6 tabs per day but the pump is great

Nov 03, 2018
Verified Buyer

it's the first supplement i used , it helped working out without getting tired but there wasn't any pump.

May 14, 2018

I bought this product because I was on a quest to grow a muscle. While I feel like Frodo felt when he was on his way to Mordor, the once impossible quest now seems possible. Good pumps got me pushing myself. This product helps me keep going and gives me the encouragement like Sam gave Frodo.

Aug 27, 2017

Let me tell you about this. The taste is so bad you have to add sweetener or add it to something very sweet, but still the arginine is overpowering. It tastes and smell really bad. The pump it gives you is far my expectations. If you mix this with another pre workout your pump will double...I really love this product only down fall is that it tastes horrible. My veins were about to explode i would buy this product again.

Jun 09, 2017
Verified Buyer

This product is great if you're seeking for a pump and an increase in blood flow. It's really affordable for the amount of capsules that it includes.

Mar 07, 2017
Verified Buyer

It's hard to believe that something this affordable would work so well...

Mar 04, 2017
Verified Buyer

An essential part of my supplementation. This products gives amazing pumps, is super cheap and highly effective. It gets the blood flowing easily and smoothly.

Dec 17, 2016
Verified Buyer

Very Good Price And The Pump Are Real I Consume 2 Capsules 30 Mins Before Workout That Gave Me Great Energy And Pump I Recommend It To Everyone That Need That Little Spark In The Gym

Oct 28, 2016
Verified Buyer

It is what it is. There's no bad flavor, stomach discomfort, or anything uncomfortable going with me as a product of taking these. Good job.

Aug 14, 2016
Verified Buyer

if you are looking into using this then you already know what its for! At this price it just cant be beat. love the product and price.

Jul 04, 2016
Verified Buyer

does the job, I recommend it

Feb 24, 2016
Verified Buyer

For the price you can't beat the pump it gives you, I love it and will continue to order.

Oct 24, 2015

clean Arginine! good price

Sep 23, 2015
Verified Buyer
No written review.
May 15, 2015
Verified Buyer

HOLY CRAP! This is a MUST buy if you are looking for a great pump! I literally just got it and its the biggest pump ive ever had in the gym. Would recommend to anyone who wants to look bigger. Helps increase intensity from seeing all the veins. Dont waste your money on big company brands, this works and its cheap

3 Sizes
500mg/250 Capsules
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Provides Support For Production of Nitric Oxide*

What's in NOW L-Arginine

500mg/250 Capsules
Serving Size 2 Capsules
Servings Per Container125
Amount Per Serving
L-Arginine (Free-Form) 1 g *
* Daily Value not established
Other Ingredients:
Gelatin (capsule), Magnesium Stearate (vegetable source), and Silica.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Directions For L-Arginine:

Capsules: Take 2 capsules twice daily as needed. Take between meals or at bedtime with a carbohydrate drink to facilitate absorption.

Tablets: Take 1 tablet twice daily as needed. Take between meals or at bedtimewith a carbohydrate drink to facilitate absorption.

Warnings: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. This supplement should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician.Do not use if you have had a myocardial infarction or have established coronary artery disease. Keep out of reach of children. Natural color variation may occur in this product.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Learn more about L-Arginine.
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